Buy Hafnium Oxide (HfO2) Powder Online-2026 Fast Shipping
Laboratory Sourcing and Procurement Pricing Tiers
To streamline procurement workflows for university research departments and commercial semiconductor development firms, we maintain stable bulk pricing packages based on raw material volume. Every dispatched batch carries a certified purity and phase-uniformity guarantee.
The commercial schedule below outlines current bulk material acquisition costs for standard laboratory deployment:
| Research Material Configuration | Sourcing Volume Pack | Commercial Unit Price | Stock Inventory Status |
|---|---|---|---|
| Research Grade HfO2 Powder (99.9% High Purity) | 10 Grams | $185.00 | Ready for Dispatch |
| Research Grade HfO2 Powder (99.99% Ultra Purity) | 25 Grams | $410.00 | Ready for Dispatch |
| Research Grade HfO2 Powder (99.99% Ultra Purity) | 100 Grams | $1,280.00 | Ready for Dispatch |
| Bulk Fabrication Scale HfO2 Granules | 500 Grams | $4,850.00 | Freight Booking Required |
| Custom High-k Hafnia Sputtering Target | 2-Inch Diameter | $695.00 | Custom Batch Ordered |
Hafnium Oxide (HfO2) Nanopowder
Hafnium Oxide (HfO2), frequently called hafnia, stands as a critical transition metal oxide in contemporary semiconductor fabrication and nanotechnology research. Material scientists routinely purchase this material due to its exceptionally high dielectric constant and outstanding thermal durability.
Traditional silicon dioxide insulation layers face massive electrical leakage currents at sub-nanometer scales. Consequently, deploying high-purity hafnium oxide thin films provides the most practical and efficient path to manufacturing next-generation microelectronics and non-volatile computer memory architectures.
By carefully tuning crystal phase configurations during thermal processing, researchers can easily unlock ferroelectric properties or adjust optical performance. This comprehensive technical profile details the core chemical identifiers, bulk procurement options, crystal structures, and laboratory handling protocols necessary for advanced experimental operations.
2D and Bulk Material Structural Identification
To ensure seamless inventory logging and laboratory tracking, material management systems index hafnium oxide under specific inorganic parameters. It differs fundamentally from lighter transition metal oxides because it possesses an exceptionally high material density and a massive refractive index.
Furthermore, the underlying crystal matrix transforms dynamically based on temperature. This flexibility allows researchers to alter electrical polarization behavior across different experimental targets.
- Chemical Name: Hafnium Oxide (HfO2)
- Alternative Terms: Hafnia, Hafnium Dioxide, High-k Sputtering Source Powder
- CAS Registry Number: 12055-23-1
- Physical Form: Heavy, odorless white powder or dense pressed pellets
Polymorphic Crystal Phase Properties
The operational yield of specialized hafnia coatings depends entirely on the underlying crystal structure. Graphene or silicon substrates generally host these coatings during vapor deposition treatments. Subsequently, localized heating cycles modify the atomic layout to achieve the target electrical capacity.
The database grid below details the core physical properties across each distinct crystal phase:
| Crystal Phase Metric | Monoclinic (α-phase) | Tetragonal (β-phase) | Cubic (γ-phase) | Orthorhombic (Ferroelectric) |
|---|---|---|---|---|
| Stability Temperature | Ambient to 1720°C | 1720°C to 2600°C | 2600°C to 2758°C | Induced via mechanical strain |
| Dielectric Constant (k) | ~ 16 to 20 | ~ 70 | ~ 29 | ~ 30 to 50 |
| Refractive Index (at 550 nm) | ~ 2.11 | ~ 2.20 | ~ 2.25 | ~ 2.15 |
| Dominant Lattice Symmetry | Space Group P2₁/c | Space Group P4₂/nmc | Space Group Fm3m | Space Group Pca2₁ |
Deposition Methodologies and Thin-Film Mechanics
The localized performance of hafnium oxide films depends directly on the specific deposition mechanism you use to clear out organic chemical parts. Therefore, laboratories utilize diverse processing pathways to balance thin-film coverage against baseline electrical leakage risks.
Atomic Layer Deposition (ALD)
ALD processing mixes volatile hafnium compounds with gaseous oxygen sources like ozone or moisture.
- Precursor Standards: Hafnium tetrachloride (HfCl₄) or Tetrakis(dimethylamido)hafnium (TDMAH).
- Lattice Impact: This layer-by-layer method builds thin, highly uniform coatings over complex structures. However, chemical processing occasionally leaves behind trace chlorine or carbon residues, which requires careful testing during electrical leak checks.
Sol-Gel Chemical Synthesis
Sol-gel processing blends liquid hafnium chemicals inside an organic alcohol environment to cause chemical hydrolysis.
- Processing Standards: Chemists mix the liquid precursors at room temperature before firing the resultant gel matrix at elevated temperatures.
- Lattice Impact: The intense heat instantly forces organic elements out as carbon dioxide gas. The resulting shrinkage breaks the material down into dry, pure nanopowder clusters.
Physical Vapor Deposition (PVD)
This mechanical technique shoots high-energy electron beams or plasma directly at compressed hafnium oxide targets.
- Processing Standards: Operators conduct this method inside an ultra-high vacuum chamber filled with precise argon-oxygen gas mixtures.
- Lattice Impact: This technique creates heavy, uniform coatings for optical applications with zero remaining chemical residue. Consequently, it serves as an excellent option for producing laser mirrors and anti-reflective filters.
Analytical Spectroscopic Characterization Benchmarks
When conducting material verification or quality control audits, laboratories evaluate hafnium oxide batches across three primary testing techniques to ensure structural uniformity.
Raman Spectroscopy
Raman shifts provide explicit data regarding phase composition, lattice imperfections, and internal stress levels within the oxide film.
- The Monoclinic Profile: Displays a distinct twin peak shape near 500 cm⁻¹ and 670 cm⁻¹ under normal conditions.
- The Tetragonal Profile: Replaces the monoclinic peak markers with a single sharp signal near 270 cm⁻¹ after heat treating.
- Phase Calculation: Reviewing the space beneath these separate peaks lets technicians quickly calculate the exact balance of monoclinic versus ferroelectric orthorhombic phases inside a sample.
X-ray Photoelectron Spectroscopy (XPS)
XPS scans offer absolute verification of chemical purity by tracking electron behavior in the hafnium and oxygen layers. The analyzed spectrum of high-grade HfO2 shows a sharp doublet representing the fully oxidized states near 17.5 eV and 19.0 eV. Meanwhile, any lower energy sub-oxide signals reveal harmful oxygen vacancies inside the crystal matrix.
X-ray Diffraction (XRD)
XRD measurements trace modifications in the packing parameters of individual crystal networks. For example, standard monoclinic powder exhibits two sharp, narrow diffraction peaks near 28.4° and 31.6°. Upon transformation, tetragonal hafnia narrows this profile into a single, intense reflection near 30.5° because the lattice assumes higher structural symmetry.
Primary Applications in Laboratory Research
Because of its high dielectric constant, exceptional heat tolerance, and optical clarity, HfO2 serves as a fundamental material across several experimental domains:
- Advanced Microprocessing: Manufacturing facilities use HfO2 as a high-k dielectric gate to further downscale sub-nanometer field-effect transistors.
- Ferroelectric Logic Units: Laboratories dope thin layers of HfO2 with zirconium to create switchable electrical states for non-volatile storage hardware.
- High-Energy Laser Equipment: Optical developers evaporate HfO2 onto lenses to build durable coatings capable of handling intense laser pathways.
- Solid Oxide Fuel Cells: Renewable energy labs study customized hafnia variants as highly efficient high-temperature oxygen ion conductors.
Storage, Stability, and Laboratory Safety Protocols
In its massive powder form, hafnium oxide is a heavy, stable material. However, nanoscale versions produce fine particles with an expansive total surface area. Therefore, laboratory personnel must follow explicit safety guidelines to protect technicians and preserve material purity.
Safe Laboratory Handling
Because it is exceptionally fine, dry HfO2 powder aerosolizes easily and becomes airborne during weighing tasks. Consequently, all material measuring, transfers, and mixing must occur inside an active chemical fume hood or an enclosed dust-extraction station. Furthermore, lab technicians must wear nitrile gloves, full-coverage eye goggles, and a HEPA-filtered particulate respirator to fully eliminate skin contact or inhalation risks.
Storage Parameters
Keep HfO2 powder in tightly sealed, airtight borosilicate glass containers away from aggressive mineral acids or volatile solvents. Because nanoscale oxide powder can absorb nearby chemicals, store containers inside a dedicated laboratory desiccator or seal them under a dry nitrogen blanket. This protocol stops unwanted chemical absorption and protects long-term weight accuracy.
FAQ
What makes Hafnium Oxide better than Silicon Dioxide in semiconductor fabrication?
Hafnium oxide features a dielectric constant four times higher than silicon dioxide. This massive electrical capacity allows researchers to make insulation layers thicker, which stops power-wasting quantum leaks while maintaining excellent transistor control.
Which acids can successfully dissolve or etch solid Hafnium Oxide films?
Solid hafnia exhibits extreme chemical resistance. Therefore, researchers must use hot concentrated hydrofluoric acid or specialized phosphoric acid blends at elevated temperatures to dissolve or etch the material.
How do oxygen vacancies alter the electronic behavior of an HfO2 layer?
Oxygen vacancies create localized electron traps within the wide energy bandgap of the oxide. Consequently, a high concentration of these vacancies causes leakage currents and can trigger unpredictable electrical breakdowns.
Is Hafnium Oxide powder hygroscopic or prone to degradation?
HfO2 powder remains structurally stable in open air and does not break down over time. However, nanoscale variants possess high surface energies. Therefore, they absorb moisture from humid air, which can alter your exact weight measurements.
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